An eastbound BNSF Railway double-stack train, Z-SBDWSP7-26A (Priority UPS-LTL Intermodal; San Bernardino CA to Willow Springs IL), rounds the curve at the east end of Silverwood as it approaches the Summit of Cajon Pass on June 26th, 2015. In just a few seconds, this train will meet a westbound, for which the clear signal on the cantilever in the background is intended.